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| All Patents in class 29/527.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,293,739 | Dec. 27, 1966 | C.W. Hoglund, A.G. Coy | Method of holding deformable objects | work holding | |
| 3,470,598 | Oct. 07, 1969 | V. Berthelsen | Method of making structural elements | ||